  import html2canvas from 'html2canvas'
  import JsPDF from 'jspdf'

const PDFJs = {
    importPDF(title, html) {
        html2canvas(html, {allowTaint: true}).then(function(canvas){
          let contentWidth = canvas.width*2
          let contentHeight = canvas.height*2
          let pageHeight = contentWidth / 592.28 * 841.89
          let leftHeight = contentHeight
          let position = 0
          let imgWidth = 595.28
          let imgHeight = 592.28 / contentWidth * contentHeight
          let pageData = canvas.toDataURL('image/jpeg', 1.0)
          let PDF = new JsPDF('', 'pt', 'a4')
          if (leftHeight < pageHeight) {
            PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
          } else {
            while (leftHeight > 0) {
              PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
              leftHeight -= pageHeight
              position -= 841.89
              if (leftHeight > 0) {
                PDF.addPage()
              }
            }
          }
          PDF.save(title + '.pdf')
        })
    },
}

export default PDFJs;
